The Democrat was visiting the pharmaceutical company Tolmar Inc. and Wolf Robotics in Fort Collins on Thursday. On Friday, he plans to visit the biofuels firm Gevo in Englewood and the Colorado Springs facilities of aerospace industry companies Honeywell and Northrop Grumman Corp.

Bennet is using the visit to promote his message that the tax code should be structured in a way that prioritizes innovation and job growth. President Barack Obama has called for closing tax loopholes, and ending special tax breaks for oil and gas companies.

Some Republicans have proposed simplifying the tax code in ways that promote work, savings and investment.